I think not. It isn't gyroscopic effects that keep you upright- if so, they'd keep you from steering, too, would they not? But, the way you balance on a bike is basically by steering the front wheel so the bike stays underneath you. The speed at which the front of the bike moves sideways when you steer is proportional to your speed. So when you go faster, a slight movement will promptly put the bike back under you. At very slow speeds, exaggerated movements are required to accomplish the same thing.
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"be careful this rando stuff is addictive and dan's the 'pusher'."